[Webkit-unassigned] [Bug 241458] REGRESSION (iOS 15.5): Angular Materials style triggers poor performance on a long scrolling page

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=241458

--- Comment #9 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
This is much worse on iOS because we get a flood of "didScroll" messages to the web process, so update composting layers for lots of small scroll increments.

On macOS, where scrolling and compositing updates happen in the same process, we coalesce via ScrollingTree::m_pendingScrollUpdates.

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